void CParticleEffect::PaintLRS (CG16bitImage &Dest, int x, int y, const ViewportTransform &Trans)
// PaintLRS
//
// Paints the object on an LRS
{
SParticleArray *pGroup = m_pFirstGroup;
while (pGroup)
{
COLORREF wColor = CGImage::RGBColor(128, 128, 128);
for (int i = 0; i < pGroup->iCount; i++)
if ((i % 10) == 0
&& pGroup->pParticles[i].IsValid())
{
int x, y;
Trans.Transform(GetPos() + pGroup->pParticles[i].vPos, &x, &y);
Dest.DrawPixel(x, y, wColor);
}
pGroup = pGroup->pNext;
}
}
void COrbit::Paint (CG16bitImage &Dest, const ViewportTransform &Trans, COLORREF rgbColor)
// Paint
//
// Paint the orbit
{
DWORD redValue = GetRValue(rgbColor);
DWORD greenValue = GetGValue(rgbColor);
DWORD blueValue = GetBValue(rgbColor);
// Paint circular orbits in a single color; eccentric orbits change color
// since they are not equidistant from the sun
if (m_rEccentricity == 0.0)
{
Metric rAngle;
const Metric rIncrement = g_Pi / 90.0;
int xPrev, yPrev;
WORD wColor;
// The orbit color fades depending on the distance from the sun
Metric rFade = 0.25 + (LIGHT_SECOND * 180.0 / m_rSemiMajorAxis);
if (rFade < 1.0)
wColor = CG16bitImage::RGBValue((int)(redValue * rFade), (int)(greenValue * rFade), (int)(blueValue * rFade));
else
wColor = CG16bitImage::RGBValue((WORD)redValue, (WORD)greenValue, (WORD)blueValue);
// Compute the position of the starting point
Trans.Transform(GetPointCircular(0.0), &xPrev, &yPrev);
// Paint the orbit in multiple segments
for (rAngle = rIncrement; rAngle < g_Pi * 2.0; rAngle += rIncrement)
{
// Compute the end point
int x, y;
Trans.Transform(GetPointCircular(rAngle), &x, &y);
// Draw a line segment
Dest.DrawLine(xPrev, yPrev, x, y, 1, wColor);
// Next point
xPrev = x;
yPrev = y;
}
}
else
{
Metric rAngle;
const Metric rIncrement = g_Pi / 90.0;
int xPrev, yPrev;
// Compute the position of the starting point
Trans.Transform(GetPoint(0.0), &xPrev, &yPrev);
// Paint the orbit in multiple segments
for (rAngle = rIncrement; rAngle < g_Pi * 2.0; rAngle += rIncrement)
{
Metric rRadius;
CVector vPos = GetPointAndRadius(rAngle, &rRadius);
WORD wColor;
// Compute the end point
int x, y;
Trans.Transform(vPos, &x, &y);
// The orbit color fades depending on the distance from the sun
Metric rFade = 0.25 + (LIGHT_SECOND * 180.0 / rRadius);
if (rFade < 1.0)
wColor = CG16bitImage::RGBValue((int)(redValue * rFade), (int)(greenValue * rFade), (int)(blueValue * rFade));
else
wColor = CG16bitImage::RGBValue((WORD)redValue, (WORD)greenValue, (WORD)blueValue);
// Draw a line segment
Dest.DrawLine(xPrev, yPrev, x, y, 1, wColor);
// Next point
xPrev = x;
yPrev = y;
}
}
}